Adhesive coated sheet material



M. SAVADA ET AL ADHESIVE COATED V SHEET MATERIAL.

Filed March 1B, 1940 April 7, 1942.

Gttorneg Patented Apr. 7, 1942 ort-FICE ADHESIVE COATED SHEET MATERIALMartin Savada and William Horowitz, New York, N. Y.

Application March 13, 1940, Serial No. 323,700 1 claim. (01454-43) Thisinvention relates generally to sheet material, such as fabric, paper,etc., coated on one surface thereof with a pressure-sensitive adhesiveand provided with a backing or protective layer whereby when the fabricis wound in a roll the outer or right side thereof is maintained out ofcontact with the adhesive. When the fabric or other sheet material is tobe used, the same is unwound from the roll and the backing is removedthereby to expose the adhesive on the back of said material to permitattachment of said adhes ive coated sheet material.

While the invention is in general applicable to fabrics, paper or othersheet material of any width, said invention is particularly advantageousin its application to ribbons, tapes, bindings, ornamental strips,labels and other narrow fabrics for which there are numerous uses.Accordingly, the invention will be described and illustrated in itsapplication to narrow strips or webs of fabric, paper or other sheetmaterial.

Heretofore various materials have been utilized as the backing orprotective layer for fabrics or other sheet material coated withpressure-sensitive adhesive. Among the materials which have beenutilized for such protective layers or backings are glazed paper orglassine, Holland cloth, netting, etc. These materials areobjectionable. Thus, for example, in the case oi' glazed paper andHolland cloth, these materials, because of the Moreover when the sheetmaterial to be protected is paper, the backing layer, in many instances,tears the bers of the paper which adhere to the backing layer when thelatter is stripped from the paper.

To obviate the disadvantages and objections to the use of backingmaterials such as glazed paper, glassine or Holland cloth having acontinuous surface, it has been proposed to utilize woven materials suchas cloth netting but such materials, while alleviating to some extentthe diiculties encountered in the use of such materials as glazed paperor Holland cloth are nevertheless highly objectionable. Moreparticularly, such netting when attached to the adhesive coated fabricresults, in the case of cloth, in the unravelling of the threads of thebacking which adhere to the adhesive of the adhesive coated facematerial, and the more closely woven the backing is, the greater is thetendency to adhere to the adhesive coated material. When applied 15.0paper or other .non-woven face materials, the netting while sometimesless objectionable than glazed paper or Holland cloth is neverthelessunsatisfactory.

The above mentioned objections and disadvantages are eliminated inaccordance with the pr'esent invention by providing the adhesive coatedface material with a backing or protective layer of netting which isbias cut and applied to the adhesive coated surface of the face materialso that the warp and weft threads of the backing are arranged obliquelywith respect to the longitudinal extent of the adhesive coated material.In this way are eliminated, not only the disadvantages of the netting asheretofore applied but it is also unnecessary to use such other backingmaterials as glazed paper or Holland cloth.

i Among the advantages derived from the use of bias cut netting as thebacking material for the pressure-sensitive adhesive coated fabric arethat a more open netting can be used than was possible with a nettingcut on the straight of the goods since the ravelling of the threads ofthe netting is eliminated as will clearly appear in the more detaileddescription of the invention. The pre-V vention of ravelling is a veryimportant advantage in itself besides enabling the use of a more opennetthan is possible when the netting is cut on the straight of thegoods. Adhesion of the backing to the adhesive coated material in astraight line is eliminated when the netting is applied to the adhesivecoated material in accordance with the present invention. This is animportant advantage more particularly in reference to the use of thebacking on adhesive coated paper. By adhesion in a straight line ismeant the more or less continuous separation or tearing away of the bresor of a brous layer of the paper and the adhesive coating thereon whenthe protective layer is stripped from such material. When this occurs,the face material is ingeneral impaired or destroyed and, morespecifically, its adhesive surface is at least partially removed.

Another advantage of the present invention is that the use of bias cutbacking net or the like results in displacement of the individualthreads of the backing when-the latter is removed from the materialunder tension thereby loosening the Athreads of the backing from theadhesive coated material. In other words, when the net backing is cut onthe bias and applied to the face material as stated above, in the eventthat a strong pull is necessary to separate the backing from theadhesive vcoated face material, the threads of the backing are pulledand displaced with respect to each other in the warpand in the weft ofthe backing and thus are treed more easily from the face material.

When the bias cut netting is applied in accordance with the presentinvention to narrow fabrics of cloth or other. woven material. ravellingof said cloth is reduced to a minimum, as the threads of the backing donot extend parallel to the threads of the adhesive coated material buton the contrary are transversely or obliquely arranged and the backinghas open edges whereby the adhesion of the backing at the side edges ofthe face fabric is substantially prevented. Inasmuch as the use of biascut netting as the backing for the adhesive coated material reduces theadhesion between the backing and the adhesive cbated material, thusfacilitating the separation of the backing from such material to whichit is applied, the present invention permits of the use on the facematerial of an adhesive which is stronger than would otherwise bepossible and on that account it is possible, in accordance with thepresent invention, to provide a fabric with a coating of an adhesive ofgreater adhesive properties than was feasible heretofore for such useswhere a strong bond between the face material and the article to whichit is applied is desired.

The above and other features and advantages of the invention will bemore fully understood from the following description considered withreference to the accompanying drawing.

In the drawing:

Fig. 1 is a plan view of adhesive coated narrow fabric, such as wovencloth, ribbon, tape, etc.. provided with a protective layer or backingin accordance with the present invention, part of the adhesive coatedcloth being detached from the backing and turned back for the purposesof illustration;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a view similar to Fig. 1, illustrating the application of theinvention to non-woven sheet material such as, for example, paper;

Fig. 4 is a sectional view on the line 4--4 of Fig. 2;

Fig. 5 is a plan view of a label strip provided with a backing inaccordance with the present invention;

Fig. 6 is a view similar to Fig. 5 showing one of the labels detachedfrom the backing;

Fig. 7 is a sectional view on the line '|I of Fig. l;

Fig. 8 is a plan view of a label detached from the backing strip.

Referring now to the drawing in detail, and first to the application ofthe invention illustrated in Figs. 1 and 2, the sheet material Icomprises a face strip or web of fabric such as woven cloth, for examplea length of ribbon having on one surface thereof a coating I4 ofpressure-sensitive adhesive. Said adhesive is of a well known type whichis non-drying and which is capable of adhering with sufllcient tenacityto most surfaces, resisting displacement from the material or object towhich it is applied but -which can ordinarily be removed by a strippingforce applied at an angle to the surface to which the material isapplied. As adhesives of this character are well known furtherdescription thereof is unnecessary. The backing layer I8 comprises athin open mesh netting which is cut on the bias and which is applied tothe adheslve coated surface of cloth layer I2 in such manner that thewarp and weft threads of said netting are transversely and preferablyobliquely arranged with respect to the longitudinal extent of the cloth.

In the drawing. the threads of the net of layer Il are for illustrativePurposes shown substantially thicker than in the actual net material,and it will be understood that in this connection that the thickness ofthe threads of the netting can be the same as that of netting asheretofore used for backings. However, in accordance with the presentinvention, the netting can have a more open weave than was heretoforepractical. The netting of backing Il is preferably coated with glue orsizing to hold the threads in woven relation. As indicated more or lessconventionally at I8 in Fig. 1, the cloth I2 is cut on the straight andthe backing layer Il of netting is cut on the bias and the warp and weftthreads thereof are obliquely arranged in respect to the warp and weftthreads of the cloth comprising the fabric strip I2.

Ordinarily, narrow fabrics composed of cloth strips such as the strip I2are produced from wider fabrics by slitting the same with the resultthat the edges of the narrow fabrics are non-selvedge edges. While theadhesive coating holds the warp threads of the cut cloth strips or webs,tending to prevent ravelllng thereof, such ravelling frequently occurswhen fabric cut on the straight of the goods'is used as the backing orprotective layer. When, however, in accordance with the presentinvention, the fabric of the backing layer is cut on the bias andapplied substantially as herein described, the removal of the backinglayer from the face fabric strip I2 is greatly facilitated and at thesame time ravelling of the edges of the face layer is obviated.Furthermore in accordance with the present invention the tendency of thethreads of the fabric of the backing layer to adhere to the adhesivecoated surface of the face layer is eliminated as said backing layer isnon-ravelling since the warp as well as the weft threads of said backinglayer extend transversely of the fabric.

In Figs. 3 and 4, the material IDA embodying the invention comprises aface strip I2a composed of non-woven continuous sheet material such aspaper, Cellophane, etc., the adhesive coated surface of said facematerial being indicated at Ila. The backing layer I8 composed of biascut netting as described above in reference to material III is appliedto the face material I2a so that the warp and weft threads of saidbacking layer extend obliquely to the longitudinal direction of the facematerial I2a. On this account the backing layer I6 can be readilystripped from the face strip I2a without danger of the fibres or a layerof the adhesive coated surface of said face strip adhering to thebacking layer.

In Figs. 5 to 8 the invention is illustrated as applied to a label ortag strip IIIB. As here shown, said strip comprises a face layer ofpaper or other material suitable for forming labels, tags or otheradhesive coated tickets.V As here shown, the labels L provided in edgeto edge relation as parts of a continuous facing strip I2b of paper orother suitable sheet material are mounted on the backing strip I i. Saidface strip I2b is provided with transversely extending lines of scoring20 to facilitate the detachment of the labels or tags individually fromthe strip. As shown in Fig. 'I the strip I2b is provided with a coatingMb of pressure-sensitive adhesive corresponding to the surface coatingI4 and Ila of pressure-sensitive adhesive provided on the face strips I2`and Ila o1' the materials illustrated in Figs. 1 and 3, respectively.As shown in Fig. 6 one or more labels can be readily detached from thebacking or mounting strip I6, a. detached label free from the backingstrip being shown in Fig. 8.

From the above, it will be apparent that the adhesive coated stripmaterial, whether of cloth, paper or other sheet material, is providedwith a backing or protective layer which is associated with the facestrip or web in such manner as to result in the elimination of theobjections to the prior art material. It will be understood that thebias cut fabric can be laminated with wide face fabrics and thereafterthe narrow ware described above can be produced by slitting thelaminated material along transversely spaced longitudinally extendinglines. It will be observed that the adhesive coated material pro videdwith the backing or protective strip can be provided in any desiredlength and wound in, a roll on a spool or in any other way. The adhesivecoated sheet material has a wide variety of uses such as for example forstriping, packaging, dress and other costume trimming, shelf edgings,wall decorations as coverings for Venetian blind tapes, etc., andnumerous other uses.

While we have shown and described the preferred embodiment of theinvention and the application of the latter to narrow fabrics or narrowware comprising various sheet materials, it

will be understood that the principle of the nvention may be embodiedotherwise than as here shown and that the invention may be applied tovarious adhesive coated materials other than those herein specicallymentioned. Accordingly, we do not wish to be limited to the invention asherein shown or described, except as may be required by the scope of theappended claim, and it will be understood further that the enumerateduses are by no means exhaustive of the uses to which the adhesive coatedmaterials of the present invention can be put.

Having thus described our invention, what We claim and desire to secureby Letters Patent is:

A length of sheet material comprising a face strip or web of brousmaterial having a surface thereof coated with a. pressure-sensitiveadhesive, and a backing strip or web of woven sheet material removablyattached to said face strip on said pressure-sensitive coated surfacethereof in direct surface to surface contact therewith, said backingstrip strip or web having cut side edges and comprising a layer of biascut open mesh woven fabric all of the threads of which are arrangedobliquely to the longitudinal extent of said strip of face fabric, saidbacking and face strips being substantially coextensive in length andwidth.

MARTIN SAVADA. WILLIAM HOROWITZ.

